ghsa-f4hc-rvh5-8phv
Vulnerability from github
Published
2022-05-13 01:05
Modified
2022-05-13 01:05
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

A Reachable Assertion issue was discovered in the KDC in MIT Kerberos 5 (aka krb5) before 1.17. If an attacker can obtain a krbtgt ticket using an older encryption type (single-DES, triple-DES, or RC4), the attacker can crash the KDC by making an S4U2Self request.

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{
  "affected": [],
  "aliases": [
    "CVE-2018-20217"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-617"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-12-26T21:29:00Z",
    "severity": "MODERATE"
  },
  "details": "A Reachable Assertion issue was discovered in the KDC in MIT Kerberos 5 (aka krb5) before 1.17. If an attacker can obtain a krbtgt ticket using an older encryption type (single-DES, triple-DES, or RC4), the attacker can crash the KDC by making an S4U2Self request.",
  "id": "GHSA-f4hc-rvh5-8phv",
  "modified": "2022-05-13T01:05:39Z",
  "published": "2022-05-13T01:05:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20217"
    },
    {
      "type": "WEB",
      "url": "https://github.com/krb5/krb5/commit/5e6d1796106df8ba6bc1973ee0917c170d929086"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2019/01/msg00020.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2021/09/msg00019.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KNHELH4YHNT6H2ESJWX2UIDXLBNGB2O"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20190416-0006"
    },
    {
      "type": "WEB",
      "url": "http://krbdev.mit.edu/rt/Ticket/Display.html?id=8763"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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